Canvas carrier for harvesters.



H. WIEIVIER.

CANVAS CARRIER FOR HARVESTERS.

APPLICATION FILED FEB,24. 191a. RENEWED FEB. 4. 19.15.

Patented Nov. 30, 1915.

COLUMBIA PLANOGRAPH co.,\vAsmNGT6N. u c.

HENRY'WIE ER, or NEAR DRISGOLL, NORT DAKOTA.

CANVAS CARRIER FOR HARVESTEES.

Specification of Letters Patent.

Application filed February 24, 1913, Serial No. 750,249. Renewed February 4, 1915. Serial No. 6,168.

To allwhom it may concern:

Be it known that I, HENRY WIEMER, citizen of the United States, residing near Driscoll, in the county of Kidder and State of North Dakota, have invented certain new and useful Improvements in Canvas Carriers for Harvesters; and I do hereby declare that the following is a full, clear, and

exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improvement in canvas carriers or aprons adapted for use on various types of machines.

The object of the invention is to provide a practically indestructible carrier for all types of machines and in which the friction usually present will be greatly reduced, the machine thereby requiring considerably less power than older types of carriers, and removing nearly all wear and strain from the canvas besides removing the friction from the boXings and preventing the same unduly wearing.

In the accompanying drawing forming a part of this application: Figure 1 is a side elevation of my improved carrier. Fig. 2 is a plan of the carrier. Fig. 3 shows a roller, sprocket wheel and chain. Fig. 4E

shows certain parts of the mechanism in perspective, and Fig. 5 is an elevation of a portion of the sprocket chain.

In the drawin s I have shown only the parts that deal with the invention having eliminated all parts in connection with any machine with which the invention may be used.

A A indicate any suitable spaced supporting members one to lie at each side of the carrier and said members may be parts 0 the machine frame. 7

B B represent two shafts which] have hearings in both said members A each said shaft carrying a roller C. In addition, a sprocket wheel D is carried by each shaft adjacent each end of each roller, and a sprocket chain E is carried by and runs upon each pair of sprockets. Secured at intervals to the links of the chain are slats E by means of any suitable metal bracket F, Fig. 4, which may be held in place by means of nuts F secured upon the pivot pins G of said chains, one of said nuts being shown in the figure referred to.

The links of the chain are of a peculiar structure in that they are adapted to move tion or in order that they will pass around Patented Nov. so, 1915. i

the sprocketsll), and that the top stretch of the chain, orthat lying between said sprockets, willbe practically a straight rigid member. That is to say, as shown in Figs. 4 and 5, it is observed that the pivot pins G are placed at one side of the middle line of the links and the ends H J of adjacent links, Fig. 5, are made to abut at that edge of the chain which is its top, as shown in Fig. 4:. It is thus clear that the top stretch of the chain cannot sag although the lower stretch can sag due to theability of the links to pivot on each other in the same manner as any sprocket chain of the common form.

K indicates the canvas apron or carrier which is suitably secured to the under sides of the slats E by a series of suitable de vices E of a form that will preferably permit the canvas to be readily detached from the slats, and may consist, for example, as shown in Fig. l, of bolts E but one of which is shown however The canvas is cut to the proper length to make an endless belt and the ends are preferably overlapped as shown in said Fig. 4L. The ends of the canvas may be secured by any suitable fastening L. The canvas may be removed by first removing the bracket F, this being accomplished by taking the nuts F from the pivot pins G. This is of great advantage as the [canvas may be easily and quickly removed from the machine and placed under cover when not required.

As shown in Fig. l I may place a roller M at one or more places beneath the upper stretch of the chains for supporting them so that inhandlingheavy loads too much weight will not be placed upon the pins G of the chain. Again, if desired, these rollers may be extended entirely across the machine to support the canvas K also. In addition, in Fig. 1 means is shown for supporting the lower stretch of the chain. A roller N is placed beneath the chain and may extend entirely along the canvas carrier as shown by broken lines in Fig. 2 which takes the weight of the chain and adjacent thereto I show a second roller O and upon these rollers is carried a belt P. It is observed that strike the belt P and then be gradually raised to the roller N. The belt P in thus angling toward the chain provides a cushion for the slats and the roller N maintains the chains and canvas in practically a straight line preventing its sagging.

It is to be observed that the diameters of the rollers C are substantially equal to the diameter of the sprocket D and the chains thereon so that the speed of travel of both the canvas and the chains will be the same, and further that the slats and canvas will run smoothly upon the rollers.

In the common form of canvas carrier it is customary to stretch the canvas tightly upon the rollers which are to carry it. This places the canvas under great strain and in continually dragging or rubbing upon the usual platform provided beneath it the canvas when worn slightly at one or more places becomes weak and is finally ruptured. Moreover, the canvas in dragging upon the platform makes considerable friction especially with the weight of the load upon it and a considerable amount of power is re quired to overcome this great friction, and, besides, the boxings of the rollers and the shafts of th rollers themselves are quickly worn, the power required being again more than should be necessary all due to the increased friction from these sources.

In view of this it has been my purpose to provide a structure that will remove as much as possible the friction in canvas carriers by eliminating the usual platform and substituting a chain that will be practically self supporting 1 throughout the stretch thereof that carries the load, the canvas being carried between the chains by means of to hold the hay or other material being elevated upon the canvas.

Having thus described my invention I claim 1. The combination with a frame including spaced side members provided at intervals with upwardly directed bearings, shafts journaled in said bearings, rollers carried by the shafts, sprocket wheelsmounted upon the ends of certain of the shafts, chains trained over the sprocket wheels, transverse slats connecting the chains, an endless can- 7 vas apron secured to the inner faces of the slats, and means carried by the frame and extended transversely beneath the apron for greater diameter than the other to engage the apron, and a belt trained over said rollers.

2. The combination with spaced shafts, of rollers carried by the shafts, an endless apron trained over the rollers, and means for supporting the lower stretch of the apron, said means including transverse rollers positioned beneath such stretch of the apron, and a belt trained over said rollers for the apron to rest upon that stretch of the belt supporting the apron extending at an angle thereto.

The combination with spaced rollers, of an endless apron trained about the rollers, additional rollers mounted below the lower stretch of the apron with the peripheral face of one above the other and in engagement with the apron, a belt trained over said additional rollers to support the apron, and a plurality of transverse slats secured to the outer face of the apron.

4. The combination with an endless conveyer apron having transverse slats, of an endless belt mounted beneath the lower stretch of the apron to engage the apron and slats and support the lower stretch of the apron.

5. The combination with an endless conveyer apron, of an endless belt mounted below the lower stretch of the apron and eX- tending at an angle thereto, a portion of the belt being in engagement with the apron.

6. The combination-with an endless conveyer apron, of spaced rollers of unequal size mounted below the apron, the peripheral face of one roller being substantially in the plane of the apron, while the peripheral face of the other is spaced below it, and a belt passed about said rollers.

7. The combination with an endless conveyer apron having transverse slats on its outer face, of spaced rollers positioned beneath the lower stretch of the apron with the peripheral face of one substantially in the plane of the lower face of the apron and the peripheral face of the other below the plane of'the lower face of the apron, and a belt passed about the rollers to sup port the apron.

8. The combination with an endless conveyer apron carrying a plurality of conveyer elements upon its outer face, of an endless belt mounted below the lower stretch ofthe apron and extending at an angle.

thereto, a portion of the belt being in engagement with the apron or conveyer elements carried thereby.

In testimony whereof I affix my signature, in presence of two witnesses.

HENRY WIEMER. WVitnesses:

W. I. SLEMMONS, L. M. THURLOW.

Copies of this patent maybe obtained for five cents "each, byaddressing the Commissioner of Patents, Washington, I). G. 

